CDKAL1 and type 2 diabetes mellitus: Replication of a recent genome-wide association study (GWAS) confirmed that T2DM-associated genetic variants (TCF7L2 rs7903146, CDKAL1 rs7756992 and rs7754840, MTNR1B rs10830962, and FTO rs8050136) are associated with the risk of GDM (12).